Distribution and density of oxpeckers on giraffes in Hwange National Park, Zimbabwe

Gagnon, Roxanne; Mabika, Cheryl T.; Bonenfant, Christophe

doi:10.1111/aje.12729

Cited by 3 publications

(3 citation statements)

References 51 publications

(96 reference statements)

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“…R.G. marked down the oxpeckers with an estimated 99% detection rate (double observer protocol; [20]). G.P.…”

Section: Materials and Methods (A) Data Collection And Preparationmentioning

confidence: 99%

“…The final sample size was 134 individual adult giraffes photographed between 09.00 and 17.00. Lastly, we located the oxpeckers on the bodies of the giraffes (abdomen, ano-genital area, back, rump, groin, head, lower leg, mane, neck, scapula, shoulder, tail, thigh or upper leg; see [20] for full details).…”

Section: Materials and Methods (A) Data Collection And Preparationmentioning

confidence: 99%

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The two oxpecker species reveal the role of movement rates and foraging intensity in species coexistence

et al. 2019

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The two Buphagus oxpecker species are specialized passerines that forage for ticks and other food particles on the body of ungulates in the African savannahs. One of their intriguing features is their ability to coexist despite sharing the same, specialized diet. Using co-occurrence data ( photographs of giraffes with oxpeckers on them) and approximate Bayesian computing, we demonstrate that yellow-billed oxpeckers changed host faster than red-billed oxpeckers and appeared to displace red-billed oxpeckers from preferred giraffe body parts. Conversely, red-billed oxpeckers exhibited a fuller use of each host and displaced yellow-billed oxpeckers from distal giraffe body parts. These findings highlight that the partition of giraffe hosts in two separate niches was only part of the coexistence story in this species pair. More precisely, the oxpeckers shared the resource by exploiting it at different rates. They engaged in different trade-offs between giving-up density, patch discovery rate and competitor displacement ability. They illustrate the importance of the time frame of interactions.

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“…R.G. marked down the oxpeckers with an estimated 99% detection rate (double observer protocol; [20]). G.P.…”

Section: Materials and Methods (A) Data Collection And Preparationmentioning

confidence: 99%

Section: Materials and Methods (A) Data Collection And Preparationmentioning

confidence: 99%

The two oxpecker species reveal the role of movement rates and foraging intensity in species coexistence

et al. 2019

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“…Parasitic infection additionally affects host morphology ( Merrill et al 2018 ). Although parasites are commonly found in birds, their impact on the host is highly dependent on specific host–parasite pairing and host conditions ( Gagnon et al 2020 ). In wintering ducks, evidence revealed that body mass and wing length are negatively associated with infection by Leucocytozoon but not by Plasmodium or Haemoproteus ( Fleskes et al 2017 ).…”

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confidence: 99%

The vocalization of the red junglefowl is a signal of body size and individual health

et al. 2022

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Bird songs are considered a sexually selected trait that can reflect the individual health of males as well as the vitality of potential mates and their competitors. Vocalization features should therefore be related to parasite load and body condition. Here, we performed a thorough acoustic analysis of the display calls of 9-month-old sub-adults and 18-month-old adults of pasture-raised red junglefowls Gallus gallus. We investigated whether the calls of pasture-raised red junglefowls can indicate body size and body condition, in addition to the influence of parasitic infection intensity on the expression of sexual traits. We found that frequency-related syllable parameters were significantly positively correlated with wing length in sub-adults, whereas body weight was independent of both the frequency and temporal parameters of calls. In addition, we correlated parasitic load with the expression of sexually selected traits and discovered a positive association between the intensity of parasite infection and wing length independent of vocal parameters. Overall, the results suggest that the vocalization of red junglefowls may convey reliable body size information, which will facilitate further studies of different vocal parameters in the transmission of bird vocalizations.

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Feeding ecology and interactions with mammal hosts in a symbiotic genus of birds (Buphagus spp.) in Namibia

Lukubwe,

Velarde-Garcéz,

Sequeira

et al. 2024

Avian Research

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Distribution and density of oxpeckers on giraffes in Hwange National Park, Zimbabwe

Cited by 3 publications

References 51 publications

The two oxpecker species reveal the role of movement rates and foraging intensity in species coexistence

The two oxpecker species reveal the role of movement rates and foraging intensity in species coexistence

The vocalization of the red junglefowl is a signal of body size and individual health

Feeding ecology and interactions with mammal hosts in a symbiotic genus of birds (Buphagus spp.) in Namibia

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